Weighing apparatus.



P. GHEZZI.

WEIGHING APPARATUS. APPLxcAnoN map MAR. 3o. 1915.

Patented Nov. 1S, 1917.

2 SHEETS-SHEET1.

Attorney.

P. GHEZZI.

WElGHING APPARATUS;

APPLICATION HLED 1111.30.1915.

1 ,246,259. Patented Nov. 13, 1917. j

MALA.

Inventor:

@qkm/n Attomw.

PAoLo enEzzr, or ivriLAiv, ITALY. i

WEIGHLNG APPARATUS. f

i Specificationv o f Letters Patent.

f Appiitationfiiedrrarehac,1915. -si-iaiiv. 18,067.

To all Lo/wm t may concern.' l

Be it lniownthat I, PAOLO Giiiizzi, subject `of the King of Italy, resident of Milan', in

the Kingdomy of Italy, No.19 yVia Pontaccio, have invented new anduseful Improvements `in Weighing Apparatus, ofrwhich the following is a specification. l l

This invention relates to improvements in weighing apparatus both of tlie'ordi-narypanscales .of the typey protected by the vUnitedStates patent applied for September' 26th, l1913, Serial No. '791,975 and of thebridge balances (bascules) and specially refers to the automatic indicating mechanisms and to afcompensating device-for the variations of length -of certain pai'ts due to changes of temperature ofthe atmosphere.

Figure 1 represents `a back elevation of a weighing apparatus ofthe type of a bridge scale showing the mechanism for indicating the weights of the bodies placed upon thel weighing bridge orplatforni; Fig. 2 repretentsy a view of said mechanism on a larger scale; F ig. 3 is a side'elevation partly-in secj tion of the weighing apparatus Fig. 1; Fig. 4 isa modified form of the mechanism represented in Fig. 2; Figs' and 6 some details; Fig. 7 shows a side-view of the compensating device for the changes of temperature applied to a bridge balance; Fig. 8 is ya section on the line A-B of Fig. 7 ;v' Fig.- 9 represents a section on the line C-D of Fig. 7 and Fig. 1() is a front view of Fig. 7.

1 is the pan or bridge of a bridge weighing apparatus which may be supported and counter-balanced in any suitable way; 2 the lever operating the weight indicating mechanism at one end of which is attached ther rod 4 that transmits the movement from the bridge to said mechanism; 3 is a casing on the front portion of the platform of the weighing apparatus wherein are placed a couple of damping-pistons 13, 13 whose rods are bridged by a small bar 14 fixed to the rod 4.

The rod 4 extends through a bored standard 5 and is connected to the counterbalancing spring mechanism fitted into a box 8 xed to one face of the diskor dial 7 carried by the standards 6 provided on the stand 3. In the box 8 `isa bracket 12 whose end 19 in alinement with the center of the disk 7 supports the spindle of the pointer; on said spindle is mounted a system of wheels of which one 16, carries a counterweight 18, the other 17, an intermediate rod 9 provided with a tightening device 15 (Fig. 5) for rod 4.

nism.

4 'is the rod connected at its lower end to J regulating of the tension and the sensibility, as' well as for adjusting theweighing apparatus.

r1`he rod 9 is actuated bythe rod'4 by means of a connection 10, while a spring 20 counteracts the Patented NQvl,.`13, 191 7.

traction aii'orded bythe The counterweight 18 canbe guided by a wire 26 whichprevents any lateral oscillatioiirmoreoverthe cord 11 may be attached to the counterweight yieldingly,for instance, by attaching lit 'to the lower extremity of the spring 31 (Fig. 6)3inserted into an axial hole j of the counterweight, thus obtaining a fui'- ther damping of shocks and vibrations.

yThe modifications shown vat Fig. 4 consist l in the substitution, for the spring 20, lof a 'Y counterweight fandjin applying' an elastic member vto the rod which transmits `the movement to the weight indicating mechathe system of levers of the weighing apparatus and at the top to a ribbon 28 of vsteel or other suitable material lying upon the curved surface of a circular sector V27 placed at the end of a leverfulcrunied at 21 and counterbalancedv lby the adjustable weight 32. v The rod 4 acts therefore directly upon the couiiterbalanced lever, but indirectly upoilirzthe rod'f9 which actuates tlie'wlieels 1 V`r24 isla linger projecting from the rod 4`A andy actuating by means' of a spring 25, a

vmember 29 attached to the lower and free extremity of the rod 9. This member 29 has a vertical slot 22 in which the head of a pin 30 projecting from a bracket 23 integral with the rod 4 above the projection 24, can slide. By these means, before the pin 30, sliding to the end of the slot 22 can draw the rod 9 Y downward, the projection 24 actuates yieldingly the rod itself (by means of the spring 25), thus damping the pull.

. and one ofthe wheels adapted to rotate said projecting from the bars 33 into holes provided in the lever 2. On both sides of the lever 2 screws 36 are provided to hold the bars 33, 33 against the lever 2 throughout their entire length and to allow of their movement when, on account of changes of temperature, their lengthening or shortening takes place, a slot 37 loeing provided to-` this end in each har 33.

Atthe other extremity of the hars 33 are two holes in which are placed the ends of a spindle 38 integral with the head 39 of the knife el, this head entering a fork at the extremity of thel lever 2. This fork is a little longer than the head itself.

Corresponding to the spindle 38 a slot 4:0 is provided in the lever 2. y f n Y .Should a change of ytemperature Atake place, the small bars 33 will lengthen or shorten, thus displacing the knife 4l and also the support 42 (Fig. 3) upon which it rests.

I-Iaving now described my invention and how the same is to be carried out, what I claim as my invention,pis:

1. In an automatic weighing apparatus amain lever, a pointer actuating rod, a support at the lower end thereof, a ,knife on the main lever held hy the support, a

registering mechanism comprising a pointer, a dial, a pointer spindle and two wheels on said spindle, a yielding connection hetween the upper end of the actuating rod wheel, a spring in said connection, a cord wound on the second wheel, a countcrwcight attached thereto., and means for counteracting the drawing action of theactuating rod. 2. In an automatic weighing apparatus a main lever, a pointer actuating rod, a knife v pivotally connecting the lever and rod, a

spring connected to the actuating rod, a registering mechanism, wheels therein, a

'cord wound on one of the wheels, a hook suspended on the cord, a connection between the hook and the upper end of the spring and having a slot and a pin, integral with the rod,adapted to slide in the slot.

3. In an automatic weighing apparatus a main lever, a pointer actuating rod, a knife pivotally connecting the lever and rod, a counteracting spring connected to the actuating rod, a registering mechanism, wheels therein,a cord wound on one of the wheels, a cord wound on the other wheel, a counterweight attached thereto, a .spring affording a yielding suspension to the counterweight, aprojection on the counterweight, a vertical guide wire for said projection.

4. In an automatic weighing apparatus, a main lever, a pointer actuating rod, a spring connected to said (rod, a` registering mechanism, wheels therein, a cord wound on one ofthe wheels and connected to one end of the spring, two hars having acoe'Hicient of expansion greater thanthat of the main lever, and vextending substantially the entire length of the lever, one of leach of their extremities being fixed to the main lever, a knife pivotally connecting the lever and rod and mounted on the other adjacent ends of said bars, Vmeans on the bars and the lever to permit of the free expansion or contraction ofthe same, said lever being forked to allow of the movement of the knife.

In testimony whereof I hereunto atlix my signature in the presence of two witnesses.

Y PAOLO GI-IEZZI. `Witnesses:

B. CARLO SALvo'rrr,

v ARTHUR P. Cormano.

Copies ot this patent may be` obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

